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Technical Data Sheet
AMS7271 ✓ Verified by PartsTable
· ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR, hardness_rating: 65.0 SHORE DUROMETER A NOMINAL, peripheral_diameter: 12.262 INCHES NOMINAL IN, center_hole_diameter: 11.918 INCHES MINIMUM AND 12.050 INCHES MAXIMUM IN, elongation_percentage: 200 MAXIMUM, cross-sectional_height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-064-4354, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
AMS7271
NSN: 5331-00-064-4354
FSC: 5331 — O-RING
CAGE: 81343 — SOCIETY OF AUTOMOTIVE ENGINEERS INC (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
hardness_rating65.0 SHORE DUROMETER A NOMINAL
peripheral_diameter12.262 INCHES NOMINAL IN
center_hole_diameter11.918 INCHES MINIMUM AND 12.050 INCHES MAXIMUM IN
elongation_percentage200 MAXIMUM
cross-sectional_height0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
departure_from_cited_documentMATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
criticality_code_justificationZZZW
NSN5331-00-064-4354
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: AMS7271 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
CENTER HOLE DIAMETER: 1.290 INCHES MINIMUM AND 1.312 INCHES MAXIMUM IN
HARDNESS RATING: 65.0 SHORE DUROMETER A NOMINAL
CROSS-SECTIONAL HEIGHT: 0.071 INCHES NOMINAL IN
OUTSIDE DIAMETER: 1.441 INCHES NOMINAL IN
ELONGATION PERCENTAGE: 200 MAXIMUM
MATERIAL: RUBBER
TECHNICAL CHARACTERISTICS (FLIS)
CENTER HOLE DIAMETER1.290 INCHES MINIMUM AND 1.312 INCHES MAXIMUM IN
HARDNESS RATING65.0 SHORE DUROMETER A NOMINAL
CROSS-SECTIONAL HEIGHT0.071 INCHES NOMINAL IN
OUTSIDE DIAMETER1.441 INCHES NOMINAL IN
ELONGATION PERCENTAGE200 MAXIMUM
MATERIALRUBBER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
KB16209Interchangeable
interchangeable cross-reference
interchangeable
6864665Interchangeable
interchangeable cross-reference
interchangeable
AMS3209Interchangeable
interchangeable cross-reference
interchangeable
AS568-027Interchangeable
interchangeable cross-reference
interchangeable
2-27C557-7Interchangeable
interchangeable cross-reference
interchangeable
2-230 N506-65Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AMS7271?
AMS7271 is a O-RING.
What parts can replace AMS7271?
There are 26 known substitutes for AMS7271: KB16209, 6864665, AMS3209 and 23 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AMS7271?
AMS7271 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-064-4354. This indicates validated use in U.S. government and defense supply chains.
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